/*
    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
                 2011,2012 Giovanni Di Sirio.

    This file is part of ChibiOS/RT.

    ChibiOS/RT is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    ChibiOS/RT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

                                      ---

    A special exception to the GPL can be applied should you wish to distribute
    a combined work that includes ChibiOS/RT, without being obliged to provide
    the source code for any proprietary components. See the file exception.txt
    for full details of how and when the exception can be applied.
*/
/*
   Concepts and parts of this file have been contributed by:
		Joel Bodenmann aka Tectu	-> Maintainer
		Andrew Hannam aka inmarket	-> framework
		Badger						-> console implementation and FSMC
		Abhishek 					-> font rendering
		Ben William					-> fastMath and lcdDrawEllipse()
		Dongxu Li aka dxli			-> lcdDrawEllipse() filled option
*/

/**
 * @file    templates/gdisp_lld.c
 * @brief   GDISP Graphics Driver subsystem low level driver source template.
 *
 * @addtogroup GDISP
 * @{
 */

#include "ch.h"
#include "hal.h"
#include "gdisp.h"

#if HAL_USE_GDISP || defined(__DOXYGEN__)

/*===========================================================================*/
/* Driver local definitions.                                                 */
/*===========================================================================*/

#ifdef UNUSED
#elif defined(__GNUC__)
# define UNUSED(x) UNUSED_ ## x __attribute__((unused))
#elif defined(__LCLINT__)
# define UNUSED(x) /*@unused@*/ x
#else
# define UNUSED(x) x
#endif

/*===========================================================================*/
/* Driver exported variables.                                                */
/*===========================================================================*/

#if !defined(__DOXYGEN__)
	GDISPDriver GDISP1;
#endif

/*===========================================================================*/
/* Driver local variables.                                                   */
/*===========================================================================*/

/*===========================================================================*/
/* Driver local functions.                                                   */
/*===========================================================================*/

/*===========================================================================*/
/* Driver interrupt handlers.                                                */
/*===========================================================================*/

/*===========================================================================*/
/* Driver exported functions.                                                */
/*===========================================================================*/

/* ---- Required Routines ---- */
/*
	The following 2 routines are required.
	All other routines are optional.
*/

/**
 * @brief   Low level GDISP driver initialization.
 *
 * @notapi
 */
void gdisp_lld_init(void) {
	/* Initialise the GDISP structure with the defaults for your display */
	GDISP1.Width = 128;
	GDISP1.Height = 128;
	GDISP1.Orientation = portrait;
	GDISP1.Powermode = powerOff;
	
	/* Now initialise your display to match */
	/* Code here */
}

/**
 * @brief   Draws a pixel on the display.
 *
 * @param[in] x        X location of the pixel
 * @param[in] y        Y location of the pixel
 * @param[in] color    The color of the pixel
 *
 * @notapi
 */
void gdisp_lld_drawpixel(coord_t x, coord_t y, color_t color) {
	#if GDISP_NEED_VALIDATION
		if (x >= GDISP1.Width || y >= GDISP1.Height) return;
	#endif
	/* Code here */
}

/* ---- Optional Routines ---- */
/*
	All the below routines are optional.
	Defining them will increase speed but everything
	will work if they are not defined.
	If you are not using a routine - turn it off using
	the appropriate GDISP_HARDWARE_XXXX macro.
	Don't bother coding for obvious similar routines if
	there is no performance penalty as the emulation software
	makes a good job of using similar routines.
		eg. If gdisp_lld_fillarea() is defined there is little
			point in defining gdisp_lld_clear() unless the
			performance bonus is significant.
	For good performance it is suggested to implement
		gdisp_lld_fillarea() and gdisp_lld_blitarea().
*/

#if GDISP_HARDWARE_POWERCONTROL || defined(__DOXYGEN__)
/**
 * @brief   Sets the power mode for the graphic device.
 * @note    The power modes are powerOn, powerSleep and powerOff.
 *          If powerSleep is not supported it is equivelent to powerOn.
 *
 * @param[in] powerMode    The new power mode
 *
 * @notapi
 */
void gdisp_lld_setpowermode(gdisp_powermode_t powerMode) {
	/* Code here */
	/* if successful
		GDISP1.Powermode = powerMode;
	*/
}
#endif

#if GDISP_HARDWARE_ORIENTATION || defined(__DOXYGEN__)
/**
 * @brief   Sets the orientation of the display.
 * @note    This may be ignored if not supported by the device.
 *
 * @param[in] newOrientation    The new orientation
 *
 * @notapi
 */
void gdisp_lld_setorientation(gdisp_orientation_t newOrientation) {
	/* Code here */
	/* if successful
		GDISP1.Orientation = newOrientation;
	*/
}
#endif

#if GDISP_HARDWARE_CLEARS || defined(__DOXYGEN__)
	/**
	 * @brief   Clear the display.
	 * @note    Optional - The high level driver can emulate using software.
	 *
	 * @param[in] color    The color of the pixel
	 *
	 * @notapi
	 */
	void gdisp_lld_clear(color_t color) {
		/* Code here */
	}
#endif

#if GDISP_HARDWARE_LINES || defined(__DOXYGEN__)
	/**
	 * @brief   Draw a line.
	 * @note    Optional - The high level driver can emulate using software.
	 *
	 * @param[in] x0, y0   The start of the line
	 * @param[in] x1, y1   The end of the line
	 * @param[in] color    The color of the line
	 *
	 * @notapi
	 */
	void gdisp_lld_drawline(coord_t x0, coord_t y0, coord_t x1, coord_t y1, color_t color) {
		#if GDISP_NEED_VALIDATION
			/* Need to clip to screen */
		#endif
		/* Code here */
	}
#endif

#if GDISP_HARDWARE_BOX || defined(__DOXYGEN__)
	/**
	 * @brief   Draw a box.
	 * @pre     The GDISP unit must be in powerOn or powerSleep mode.
	 *
	 * @param[in] x0,y0   The start position
	 * @param[in] cx,cy   The size of the box (outside dimensions)
	 * @param[in] color   The color to use
	 * @param[in] filled  Should the box should be filled
	 *
	 * @notapi
	 */
	void gdisp_lld_drawbox(coord_t x, coord_t y, coord_t cx, coord_t cy, color_t color) {
		#if GDISP_NEED_VALIDATION
			/* Need to clip to screen */
		#endif
		/* Code here */
	}
#endif

#if GDISP_HARDWARE_FILLS || defined(__DOXYGEN__)
	/**
	 * @brief   Fill an area with a color.
	 * @note    Optional - The high level driver can emulate using software.
	 *
	 * @param[in] x, y     The start filled area
	 * @param[in] cx, cy   The width and height to be filled
	 * @param[in] color    The color of the fill
	 *
	 * @notapi
	 */
	void gdisp_lld_fillarea(coord_t x, coord_t y, coord_t cx, coord_t cy, color_t color) {
		#if GDISP_NEED_VALIDATION
			if (cx < 1 || cy < 1 || x >= GDISP1.Width || y >= GDISP1.Height) return;
			if (x+cx > GDISP1.Width)	cx = GDISP1.Width - x;
			if (y+cy > GDISP1.Height)	cy = GDISP1.Height - y;
		#endif
		/* Code here */
	}
#endif

#if GDISP_HARDWARE_BITFILLS || defined(__DOXYGEN__)
	/**
	 * @brief   Fill an area with a bitmap.
	 * @note    Optional - The high level driver can emulate using software.
	 *
	 * @param[in] x, y     The start filled area
	 * @param[in] cx, cy   The width and height to be filled
	 * @param[in] buffer   The pixels to use to fill the area.
	 *
	 * @notapi
	 */
	void gdisp_lld_blitarea(coord_t x, coord_t y, coord_t cx, coord_t cy, pixel_t *buffer) {
		#if GDISP_NEED_VALIDATION
			if (cx < 1 || cy < 1 || x >= GDISP1.Width || y >= GDISP1.Height) return;
			if (x+cx > GDISP1.Width || y+cy > GDISP1.Height) return;
		#endif
		/* Code here */
	}
#endif

/* Circular Drawing Functions */
#if (GDISP_NEED_CIRCLE && GDISP_HARDWARE_CIRCLES) || defined(__DOXYGEN__)
	/**
	 * @brief   Draw a circle.
	 * @note    Optional - The high level driver can emulate using software.
	 * @note    If GDISP_NEED_CLIPPING is defined this routine MUST behave
	 *          correctly if the circle is over the edges of the screen.
	 *
	 * @param[in] x, y     The centre of the circle
	 * @param[in] radius   The radius of the circle
	 * @param[in] color    The color of the circle
	 *
	 * @notapi
	 */
	void gdisp_lld_drawcircle(coord_t x, coord_t y, coord_t radius, color_t color) {
		#if GDISP_NEED_VALIDATION
			/* Code here */
		#endif
		/* Code here */
	}
#endif

#if (GDISP_NEED_CIRCLE && GDISP_HARDWARE_CIRCLEFILLS) || defined(__DOXYGEN__)
	/**
	 * @brief   Create a filled circle.
	 * @note    Optional - The high level driver can emulate using software.
	 * @note    If GDISP_NEED_CLIPPING is defined this routine MUST behave
	 *          correctly if the circle is over the edges of the screen.
	 *
	 * @param[in] x, y     The centre of the circle
	 * @param[in] radius   The radius of the circle
	 * @param[in] color    The color of the circle
	 *
	 * @notapi
	 */
	void gdisp_lld_fillcircle(coord_t x, coord_t y, coord_t radius, color_t color) {
		#if GDISP_NEED_VALIDATION
			/* Code here */
		#endif
		/* Code here */
	}
#endif

#if (GDISP_NEED_ELLIPSE && GDISP_HARDWARE_ELLIPSES) || defined(__DOXYGEN__)
	/**
	 * @brief   Draw an ellipse.
	 * @note    Optional - The high level driver can emulate using software.
	 * @note    If GDISP_NEED_CLIPPING is defined this routine MUST behave
	 *          correctly if the ellipse is over the edges of the screen.
	 *
	 * @param[in] x, y     The centre of the ellipse
	 * @param[in] a, b     The dimensions of the ellipse
	 * @param[in] color    The color of the ellipse
	 *
	 * @notapi
	 */
	void gdisp_lld_drawellipse(coord_t x, coord_t y, coord_t a, coord_t b, color_t color) {
		#if GDISP_NEED_VALIDATION
			/* Code here */
		#endif
		/* Code here */
	}
#endif

#if (GDISP_NEED_ELLIPSE && GDISP_HARDWARE_ELLIPSEFILLS) || defined(__DOXYGEN__)
	/**
	 * @brief   Create a filled ellipse.
	 * @note    Optional - The high level driver can emulate using software.
	 * @note    If GDISP_NEED_CLIPPING is defined this routine MUST behave
	 *          correctly if the ellipse is over the edges of the screen.
	 *
	 * @param[in] x, y     The centre of the ellipse
	 * @param[in] a, b     The dimensions of the ellipse
	 * @param[in] color    The color of the ellipse
	 *
	 * @notapi
	 */
	void gdisp_lld_fillellipse(coord_t x, coord_t y, coord_t a, coord_t b, color_t color) {
		#if GDISP_NEED_VALIDATION
			/* Code here */
		#endif
		/* Code here */
	}
#endif

#if (GDISP_NEED_TEXT && GDISP_HARDWARE_TEXT) || defined(__DOXYGEN__)
	/**
	 * @brief   Draw a character using a transparent background.
	 * @note    Optional - The high level driver can emulate using software.
	 *
	 * @param[in] x, y     The top-left corner of the text
	 * @param[in] c        The character to print
	 * @param[in] color    The color of the character
	 *
	 * @notapi
	 */
	void gdisp_lld_drawchar(coord_t x, coord_t y, char c, font_t font, color_t color) {
		#if GDISP_NEED_VALIDATION
			/* Code here */
		#endif
		/* Code here */
	}
#endif

#if (GDISP_NEED_TEXT && GDISP_HARDWARE_TEXTFILLS) || defined(__DOXYGEN__)
	/**
	 * @brief   Draw a character using a filled background.
	 * @note    Optional - The high level driver can emulate using software.
	 *
	 * @param[in] x, y     The top-left corner of the text
	 * @param[in] c        The character to print
	 * @param[in] color    The color of the character
	 * @param[in] bgcolor  The background color
	 *
	 * @notapi
	 */
	void gdisp_lld_fillchar(coord_t x, coord_t y, char c, font_t font, color_t color, color_t bgcolor) {
		#if GDISP_NEED_VALIDATION
			/* Code here */
		#endif
		/* Code here */
	}
#endif

#if (GDISP_NEED_PIXELREAD && GDISP_HARDWARE_PIXELREAD) || defined(__DOXYGEN__)
	/**
	 * @brief   Get the color of a particular pixel.
	 * @note    Optional.
	 * @note    If x,y is off the screen, the result is undefined.
	 *
	 * @param[in] x, y     The start of the text
	 *
	 * @notapi
	 */
	color_t gdisp_lld_getpixelcolor(coord_t x, coord_t y) {
		#if GDISP_NEED_VALIDATION
			if (x >= GDISP1.Width || y >= GDISP1.Height) return 0;
		#endif
		/* Code here */
	}
#endif

#if (GDISP_NEED_SCROLL && GDISP_HARDWARE_SCROLL) || defined(__DOXYGEN__)
	/**
	 * @brief   Scroll vertically a section of the screen.
	 * @note    Optional.
	 * @note    If x,y + cx,cy is off the screen, the result is undefined.
	 * @note    If lines is >= cy, it is equivelent to a area fill with bgcolor.
	 *
	 * @param[in] x, y     The start of the area to be scrolled
	 * @param[in] cx, cy   The size of the area to be scrolled
	 * @param[in] lines    The number of lines to scroll (Can be positive or negative)
	 * @param[in] bgcolor  The color to fill the newly exposed area.
	 *
	 * @notapi
	 */
	void gdisp_lld_verticalscroll(coord_t x, coord_t y, coord_t cx, coord_t cy, int lines, color_t bgcolor) {
		#if GDISP_NEED_VALIDATION
			if (cx < 1 || cy < 1 || x >= GDISP1.Width || y >= GDISP1.Height) return;
			if (x+cx > GDISP1.Width)	cx = GDISP1.Width - x;
			if (y+cy > GDISP1.Height)	cy = GDISP1.Height - y;
		#endif
		/* Code here */
	}
#endif

#endif /* HAL_USE_GDISP */
/** @} */